# coding = utf-8
# Version:python3.5.1
# Tools:Pycharm 2017.2.3
import logging

from django_redis import get_redis_connection
from redis import RedisError
from rest_framework import serializers

logger = logging.getLogger('django')


class ImageCodeCheckSerializer(serializers.Serializer):

    image_code_id = serializers.UUIDField()
    text = serializers.CharField(max_length=4, min_length=4)

    def validate(self, attrs):

        image_code_id = attrs['image_code_id']
        text = attrs['text']
        # # 查询真实图片验证码
        redis_conn = get_redis_connection('verify_codes')
        real_image_code_text = redis_conn.get('img_%s' % image_code_id)
        if not real_image_code_text:
            raise serializers.ValidationError('图片验证码无效')

        # 删除图片验证码

        try:
            redis_conn.delete('img_%s'%image_code_id)
        except RedisError as e:
            logger.error(e)


        # 比较图片验证码
        real_image_code_text = real_image_code_text.decode()
        if real_image_code_text.lower() != text.lower():
            raise serializers.ValidationError('图片验证码错误')

        # 判断是否在60s内
        mobile = self.context['view'].kwargs['mobile']
        send_flag = redis_conn.get("send_flag_%s" % mobile)
        if send_flag:
            raise serializers.ValidationError('请求次数过于频繁')

        return attrs
